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System // 02 // AI
Biomarker
Activity Over
Fast
Duration
Estimated relative activity levels (0–120 hours) — hover for details, click legend to toggle
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0h
24h
48h
72h
96h
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Not fasting
Optimal window (24–72h)
Diminishing returns (72–100h)
Danger — medical refeeding (100–120h+)